CN115944969A - An ultrapure water filtration structure and filtration system - Google Patents

Abstract

The embodiment of the application provides an ultrapure water filtration structure and filtration system, relates to ultrapure water filtration technology field. The utility model provides an ultrapure water filtration structure contains inlet tube, drain pipe and disc filter, go up the filter disc cup joint in the pipeline, go up the filter disc top two terminal surfaces all be the toper design, lower filter disc rotate cup joint in the pipeline, just lower filter disc with crisscross setting between the last filter disc, the structure size of lower filter disc is the same completely with last filter disc, utilizes the toper design of the upper and lower terminal surface of last filter disc and lower filter disc, cooperation ramp for disc filter can utilize rivers to drive the ramp and rotate when carrying out the back flush, makes to take place relative rotation change between last filter disc and the lower filter disc then, makes to be located the debris between last filter disc and the lower filter disc and rotates, and the rivers of cooperation back flush make debris more discharge, reduce because of debris cause whole disc filter to take place the probability of jam.

Description

An ultrapure water filtration structure and filtration system

technical field

The present application relates to the technical field of ultrapure water filtration, in particular, to an ultrapure water filtration structure and a filtration system.

Background technique

Ultrapure water, also known as UP water, is water with a resistivity of 18MΩ*cm (25°C). It is often used in the integrated circuit industry for cleaning semiconductor raw materials and utensils, preparation of photolithography masks, and oxidation of silicon wafers. Water vapor source, etc. In addition, ultrapure water is also used in the production of other solid-state electronic devices, thick and thin film circuits, printed circuits, vacuum tubes, etc.

Ultrapure water can only be obtained after multiple treatments of raw water. During the pretreatment of raw water, it is necessary to use a disc filter to initially filter the raw water to remove suspended solids, particulate matter and colloids in the raw water. The turbidity and chromaticity in the water are reduced. The existing disc filters are mostly composed of ring-shaped reinforced plastic filter discs with grooves or ribs. When filtering, the sewage enters from the outside, and the grooves and ribs on the adjacent filter discs The rim formed by the side traps the solids in the water. During backwashing, the water flows from the inside of the annular filter disc to the outside, and the dirt trapped on the filter disc is washed down and discharged through the sewage outlet. Ring-shaped grooves or ribs, when backwashing, a certain flow rate of water is needed to wash away the dirt on the plastic filter disc, so in the process of backwashing, it is very easy to cause dirt to accumulate due to insufficient water flow rate. Cause the entire disc filter to clog.

Contents of the invention

This application aims to solve at least one of the technical problems existing in the prior art. For this reason, this application proposes a kind of ultrapure water filtration structure and filtration system, described a kind of ultrapure water filtration structure and filtration system utilize the shape design of upper filter piece and lower filter piece, cooperate ramp, make disc filter When backwashing, the water flow can be used to drive the ramp to rotate, and then the relative rotation between the upper filter and the lower filter will change, and then the sundries between the upper filter and the lower filter will rotate. The flushing water flow is easier to drain.

This application proposes an ultrapure water filtration structure, which includes a water inlet pipe, a drain pipe, and a disc filter. The water inlet pipe is connected to a plurality of backwash valves, and the plurality of backwash valves are connected to the sewage pipe. One end of the drain pipe is communicated with a drain valve, and the disc filter is communicated with the drain pipe and communicated with the backwash valve one by one, and also includes:

The disc filter includes a housing, a filter element and a ramp, the housing is respectively communicated with the drain pipe and the backwash valve, an upper cover is provided on the top of the housing, and an exhaust valve is provided on the upper cover , the filter element includes a pipeline, an upper filter piece and a lower filter piece, the pipeline is arranged in the housing, a plurality of through holes are arranged on the side wall of the pipeline, and the upper filter piece is sleeved on the pipeline, The upper filter is arranged in an array along the axial direction of the pipeline, and the top and bottom end surfaces of the upper filter are both tapered, the lower filter is rotatably socketed on the pipeline, and the lower filter is The pipelines are arranged in an axial array, and the lower filter sheets and the upper filter sheets are alternately arranged, the structure size of the lower filter sheets is exactly the same as that of the upper filter sheets, and the ramp is arranged on the Between the housing and the filter element.

According to an ultrapure water filtration structure according to the embodiment of the present application, the beneficial effect is: the tapered design of the upper and lower end faces of the upper filter and the lower filter is used to cooperate with the ramp, so that when the disc filter is backwashed, The water flow can be used to drive the ramp to rotate, and then the relative rotation between the upper filter and the lower filter will change, and then the debris between the upper filter and the lower filter will rotate, and the backwashing water will make the debris easier to clean. Discharge, reduce the probability of clogging the entire disc filter due to debris.

In addition, an ultrapure water filtration structure according to an embodiment of the present application also has the following additional technical features:

In some specific embodiments of the present application, the top of the housing is sealed and connected with an upper cover in a threaded manner.

In some specific embodiments of the present application, the housing includes a housing and an annular groove, and the annular groove is uniformly arranged on the inner wall of the housing along the axial direction of the housing.

In some specific embodiments of the present application, the cross section of the annular groove is T-shaped.

In some specific embodiments of the present application, a first vertical groove is provided on the inner wall of the housing, the first vertical groove is arranged along the axial direction of the housing, and the first vertical groove is arranged along the axial direction of the housing. The radial circumferential array is arranged, the first vertical groove communicates with a plurality of the annular grooves, and the cross-section of the first vertical groove is T-shaped.

In some embodiments of the present application, the inner bottom of the housing is designed in an arc shape, and a second vertical slot corresponding to the first vertical slot is provided on the inner bottom end of the arc design, and the second vertical slot The section is T-shaped.

In some embodiments of the present application, the ramp is of spiral design.

In some embodiments of the present application, a pull rod is inserted into the side of the ramp close to the housing, and one end of the pull rod passing through the ramp is plugged into the lower filter, and the pull rod is far away from the One end of the lower filter sheet is slidingly fitted with the annular groove and the first vertical groove.

In some embodiments of the present application, a spring is sleeved on the part of the pull rod inserted into the ramp, one end of the spring abuts against the pull rod, and the other end of the spring abuts against the ramp. road.

In some embodiments of the present application, the bottom end of the pipe is fixedly sleeved with a limiting seat, and the top end of the limiting seat is designed in a conical shape, and the limiting seat fits with the arc-shaped end of the inner bottom of the housing.

In some embodiments of the present application, a top grabbing ring is fixedly connected to the top of the pipe.

In some embodiments of the present application, a limit block is fixed on the side wall of the limit seat, and the limit block is slidingly fitted with the first vertical groove and the second vertical groove respectively.

In some embodiments of the present application, the upper filter is fixedly sleeved on the pipeline.

In some embodiments of the present application, the tie rods are in one-to-one correspondence with the lower filter pieces.

In some embodiments of the present application, there is a one-to-one correspondence between the pull rods and the annular grooves.

On the other hand, the embodiment of the present application further provides an ultrapure water filtration system, including an ultrapure water filtration structure described in any one of the above, and:

A pretreatment end, the pretreatment end includes a raw water tank, a plate heat exchanger, a pre-stage ultrafiltration, an ultraviolet sterilizer, an activated carbon filter, and a softener;

The raw water tank is connected to the plate heat exchanger through the raw water pump, the plate heat exchanger is connected to the water inlet pipe, the drain pipe is connected to the pre-stage ultrafiltration, and the pre-stage ultrafiltration is connected to the ultraviolet sterilization device, the ultraviolet sterilizer is communicated with the activated carbon filter, and the activated carbon filter is communicated with the softener;

Wherein the raw water tank plays a buffering role in the supply of raw water, the plate heat exchanger is used to adjust the water temperature, the pre-stage ultrafiltration is used for further physical filtration of the raw water, and the ultraviolet sterilizer is used for the raw water Sterilization, the active carbon filter removes the total organic carbon and residual chlorine in the water, and the softener is used for hard water softening and deionized water production.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Ultrapure water filtration often runs for a long time once it is put into use. In this process, as the raw water is filtered, although the upper filter and the lower filter are optimized, the disc filter is reduced to a certain extent. Blockage occurs in the filter, but in the case of long-term use, a certain scale will inevitably be generated in the disc filter, or a certain blockage will occur in the disc filter due to impurities in the raw water, resulting in the filtration of the disc filter. The effect gradually declines, and at this time, the filter element in the disc filter and the inside of the shell of the disc filter need to be cleaned or replaced. The existing design of the disc filter has a complicated internal structure, which is not convenient for internal The core body is taken out, which causes the existing disc filter to be inconvenient to clean or replace its interior and its components, which in turn increases the cost of use.

After long-term use, when it is necessary to clean the inside of the disc filter or clean and replace the internal filter element, it is only necessary to open the upper cover on the top of the casing, and then move the ramp to the first vertical groove Then pull the top grabbing ring to take out the entire filter element and ramp from the housing, and then pull the pull rod to remove the ramp from the filter element, which can be used for the inner wall of the housing, the ramp and the filter element respectively. Cleaning and partial replacement, simple disassembly and installation design, effectively reduce the use cost, and increase the service life of the ultrapure water filtration structure.

Although scaling rarely occurs inside the existing disc filter, as the use time increases, the adjustment of the raw water temperature by the plate heat exchanger will inevitably cause more or less scaling inside the disc filter. The degree of scale, and the design of the internal structure of the disc filter can further slow down the speed of scale formation.

When the raw water enters the disc filter, the water flows from bottom to top. Under the spiral structure of the ramp, the water flow will make the ramp rotate, and then drive multiple lower filter pieces to rotate synchronously. On the contrary, when backwashing , similarly, the water gushes out in the flushing pipe, rushes to the ramp after passing through the upper filter and the lower filter, and continues to drive the ramp to rotate, and then makes a plurality of lower filters rotate, and the rotation of the lower filter will be The relative motion is formed between the upper filter and the lower filter, and the water flow will generate turbulent flow here, which has a better impact effect on the upper filter and the lower filter, and reduces the precipitation of calcium and magnesium plasma in the raw water. , thus effectively slowing down the formation of scale.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, so It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of the overall structure of an ultrapure water filtration structure according to an embodiment of the present application;

Fig. 2 is a schematic diagram of the internal structure of a disc filter according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a partial structure of a housing according to an embodiment of the present application;

Fig. 4 is a partial structural schematic diagram of a filter element according to an embodiment of the present application;

Fig. 5 is a schematic diagram of the local structure of the ramp and the lower filter according to the embodiment of the present application;

6 is a schematic diagram of the first part of an ultrapure water filtration system according to an embodiment of the present application;

7 is a schematic diagram of the second part of an ultrapure water filtration system according to an embodiment of the present application;

Fig. 8 is a schematic diagram of the third part of an ultrapure water filtration system according to an embodiment of the present application.

Icons: 1, water inlet pipe; 11, backwash valve; 12, sewage pipe; 2, drain pipe; 21, drain valve; 3, disc filter; 31, shell; 311, housing; 312, annular groove; 313 , the first vertical slot; 314, the second vertical slot; 32, the filter element; 321, the pipeline; 322, the upper filter; 323, the lower filter; 324, the limit seat; 325, the top grabbing ring; 326, the limit Block; 33, ramp; 331, pull rod; 332, spring.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the application clearer, the technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the application. Obviously, the described embodiments It is a part of embodiment of this application, and is not all embodiment. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

As shown in Figures 1-8, an ultrapure water filtration structure according to an embodiment of the present application includes a water inlet pipe 1, a drain pipe 2 and a disc filter 3, and a plurality of backwash valves 11 are connected to the water inlet pipe 1 , a plurality of backwash valves 11 are connected to the sewage pipe 12, one end of the drain pipe 2 is connected to a drain valve 21, and the disc filter 3 is connected to the drain pipe 2 and communicated with the backwash valves 11 one by one.

Wherein, disc filter 3 comprises shell 31, filter element 32 and ramp 33, and shell 31 is communicated with drainpipe 2 and backwash valve 11 respectively, and shell 31 top is provided with loam cake, and loam cake is provided with exhaust valve, and filter element 32 includes a pipeline 321, an upper filter 322 and a lower filter 323. The pipeline 321 is arranged in the casing 31, and a plurality of through holes are arranged on the side wall of the pipeline 321. The upper filter 322 is sleeved on the pipeline 321, and the upper filter 322 is The pipeline 321 is arranged in an axial array, the top and bottom end surfaces of the upper filter 322 are tapered, the lower filter 323 is rotatably socketed in the pipeline 321, and the lower filter 323 is arranged along the axial array of the pipeline 321, and the lower filter The sheets 323 and the upper filter sheets 322 are alternately arranged, the structure size of the lower filter sheets 323 is exactly the same as that of the upper filter sheets 322 , and the ramp 33 is arranged between the shell 31 and the filter core 32 .

Specifically, the upper filter sheet 322 and the lower filter sheet 323 are designed with plastic filter discs, and the upper end faces of the upper filter sheet 322 and the lower filter sheet 323 are respectively designed with a plurality of circular grooves whose diameters gradually change gradually, and the upper filter sheet 322 and the lower filter sheet The lower end surface of the sheet 323 is respectively designed with a plurality of annular ribs whose diameters gradually change, and the annular grooves and annular ribs are designed alternately, so that the annular ribs at the bottom of the upper filter sheet 322 correspond to the annular grooves on the upper end surface of the lower filter sheet 323, Moreover, a plurality of annular grooves with regular and gradual diameters and a plurality of annular ribs with regular and gradual diameters gradually become larger from the outside of the upper filter 322 and the lower filter 323 to the inside, so that the upper filter 322 and the lower filter 323 The distance between them forms a slightly larger opening design on the outside, which is more convenient for blocking debris in raw water.

The working process of a kind of ultrapure water filtration structure and filtration system according to the embodiment of the application is described below with reference to the accompanying drawings:

The raw water is input into the casing 31 through the water inlet pipe 1 and the backwash valve 11. At this time, the water flows to the top of the casing 31 under the pressure, and then passes through the gaps between the upper filter pieces 322 and the lower filter pieces 323 from the pipeline 321. The through hole on the side wall enters the pipe 321, and then it is discharged from the drain pipe 2. When the water flow passes through the gap between the upper filter 322 and the lower filter 323, the sundries in it pass through the staggered annular grooves and Under the action of the annular rib, the original water is blocked, and the raw water is filtered for the first time. When backwashing, the direction of the water flow is controlled by the backwash valve 11. The raw water enters from the bottom of the shell 31 and flows in the opposite direction through the through hole on the side wall of the pipe 321. The gap between multiple groups of upper filter discs 322 and lower filter discs 323, because the spacing between the upper filter discs 322 and the lower filter discs 323 forms a slightly larger open design on the outside, and water flows through the upper filter discs 322 and the lower filter discs 323 rushes to the ramp 33 after that, which will bring a certain impact to the ramp 33, so that the ramp 33 rotates in the housing 31, and then drives the lower filter 323 to rotate. At this time, the lower filter 323 under the water flow and rotation Under the action of the filter, the sundries will be more easily taken out from between the upper filter sheet 322 and the lower filter sheet 323, and then discharged from the sewage pipe 12 through the backwash valve 11.

In addition, an ultrapure water filtration structure according to an embodiment of the present application also has the following additional technical features:

Wherein, the top of the shell 31 is sealed and connected with an upper cover in a threaded manner, which facilitates disassembly or installation of the top of the shell 31 .

Further, the shell 31 includes a shell 311 and an annular groove 312 , and the annular groove 312 is uniformly arranged on the inner wall of the shell 311 along the axial direction of the shell 311 .

Wherein, the cross section of the annular groove 312 is T-shaped.

Further, the inner wall of the housing 311 is provided with first vertical grooves 313, the first vertical grooves 313 are arranged along the axial direction of the housing 311, the first vertical grooves 313 are arranged in a radial circumferential array of the housing 311, and the first vertical grooves 313 communicates with a plurality of annular grooves 312, and the cross section of the first vertical groove 313 is T-shaped.

Further, the inner bottom of the housing 311 is designed in an arc shape, and a second vertical slot 314 corresponding to the first vertical slot 313 is provided on the inner bottom end of the arc design, and the cross section of the second vertical slot 314 is T-shaped.

Wherein, the ramp 33 is in a spiral design.

Specifically, the outer sidewall of the ramp 33 and the inner sidewall of the housing 311 are in clearance fit to reduce friction between the two.

Further, a pull rod 331 is inserted into the side of the ramp 33 close to the housing 311, and one end of the pull rod 331 passing through the ramp 33 is inserted into the lower filter 323, and the end of the pull rod 331 away from the lower filter 323 is connected to the annular groove 312 and the second filter 323. A vertical slot 313 is slidingly fitted.

Wherein, a tension spring 332 is sheathed on the part of the tension rod 331 plugged into the ramp 33 , one end of the tension spring 332 abuts against the tension rod 331 , and the other end of the tension spring 332 abuts against the ramp 33 .

It can be understood that the pull rod 331 is pulled outward, and then the ramp 33 is sleeved on the filter element 32, the pull rod 331 is released, and under the action of the tension spring 332, the pull rod 331 is plugged into the downward filter piece from the side of the ramp 33 323, it should be noted that at this time, the end of the pull rod 331 away from the lower filter 323 is located outside the ramp 33, and then the end of the pull rod 331 protruding from the ramp 33 is plugged into the first vertical groove 313 until the bottom end The pull rod 331 is displaced to the bottommost annular groove 312 , at this time the ramp 33 can rotate between the housing 31 and the filter element 32 through the sliding fit between the pull rod 331 and the annular groove 312 .

On the other hand, the embodiment of the present application further provides an ultrapure water filtration system, including an ultrapure water filtration structure according to any one of the above, and:

Pretreatment end, the pretreatment end includes raw water tank, plate heat exchanger, pre-ultrafiltration, ultraviolet sterilizer, activated carbon filter and softener;

The raw water tank is connected to the plate heat exchanger through the raw water pump, the plate heat exchanger is connected to the water inlet pipe 1, the drain pipe 2 is connected to the pre-stage ultrafiltration, the pre-stage ultrafiltration is connected to the ultraviolet sterilizer, and the ultraviolet sterilizer is connected to the activated carbon filter , the activated carbon filter is connected to the softener;

Among them, the raw water tank plays a buffer role in the supply of raw water, the plate heat exchanger is used to adjust the water temperature, the pre-stage ultrafiltration is used to further physically filter the raw water, the ultraviolet sterilizer is used to sterilize the raw water, and the activated carbon filter is used for water purification. The total organic carbon and residual chlorine are removed, and the softener is used to soften hard water and produce deionized water.

It should be noted that when the supply of raw water exceeds the water delivery of the raw water pump, the raw water tank is full, and the raw water supply is stopped through the liquid level control of the raw water tank. When the raw water supply is less than the water delivery of the raw water pump, the original water When the water tank is empty, the raw water pump stops running, which plays a role in protecting the raw water pump. Specifically, it can be equipped with existing components such as pressure liquid level gauge, water inlet conductivity meter, water inlet flow meter, sewage discharge, overflow, and connecting valve group. Realize the buffering effect on the supply of raw water.

It should be further explained that the raw water pump is used to pressurize the raw water and provide the power source for the pretreatment end. The pump is controlled by the liquid level signal of the raw water tank. When the high liquid level is reached, the raw water pump will automatically stop the water supply, and it can also be operated manually on site. The inlet and outlet of the raw water pump are equipped with manual butterfly valves, and the outlet is equipped with check valves, manual butterfly valves, flow meters, and pressure gauges.

It should be further explained that since the water output of the ultrafiltration and reverse osmosis membranes in the subsequent process is proportional to the inlet water temperature, and the structure of the reverse osmosis membrane will be destroyed when the inlet water temperature is lower than 5°C, in order to ensure the normal operation of ultrafiltration and reverse osmosis To work efficiently, the raw water temperature needs to be adjusted to 20-25°C. The inlet water temperature of the reverse osmosis membrane module ranges from 1°C to 45°C. When the inlet water temperature is 25°C, the water production of a single membrane element reaches the preset value. Here Basically, every time the inlet water temperature drops by one degree, the water production rate will drop by 2.5%~3%. By setting the bypass pipeline, you can flexibly choose whether to heat exchange and increase temperature according to the actual situation, and reduce operating costs. The working principle of the plate heat exchanger is based on the law of thermodynamics "heat is always spontaneously transferred from high-temperature objects to low-temperature objects. If there is a temperature difference between the fluids, there must be heat transfer.” In the process of forced convective heat transfer between two fluids with temperature differences, the surface of the heat transfer plate adopts the optimized design of corrugated structure, and its heat exchange rate reaches 92%. Even if the fluid flow rate is below the Reynolds standard value, the fluid runs between the plates in a three-dimensional manner, which promotes the formation of violent turbulence, reduces the thermal resistance of the boundary layer, and enhances the heat transfer efficiency. In this system, two sets of plate heat exchangers are used. One set is a medium-temperature water plate heat exchanger, which is suitable for use in transitional seasons, and the temperature control system is automatically adjusted. The other set is a hot water plate heat exchanger, which is suitable for heating raw water in winter. The temperature control system is automatically adjusted, and the treated water volume is 110m³/ h, the material is SS304, equipped with existing technologies such as temperature control system and pipeline valves.

It should be further explained that this system adopts a set of ultrafiltration system with net product water ≥ 100m³/h, 32 SFP2880 ultrafiltration membranes, and a recovery rate of 90%-95%. The filter system is simple and the effluent water quality is stable. The operating conditions are almost not affected by the change of the raw water quality. Meet the requirements of reverse osmosis system for pretreatment water quality.

It should be further explained that this system is equipped with a UV sterilizer with a wavelength of 254nmUV, the service life can reach 9000 hours, the sterilization effect is 99%, the processing load is 102m3/h, and the power is 583W. It has strong sterilization ability and fast speed, and is suitable for all The strains are all effective, and there is no need to add chemicals to the water, and the chemical composition of the water will not be changed.

It should be further explained that this system uses a set of 102m³/h, φ3600XH4000mm activated carbon filter, automatic operation and front and back washing, in which the filter material is pebbles 8-12mm, 4.9 tons, filled with 0.3m as a cushion, and the filter material is high-quality activated carbon 8-12 mesh, 6.8 tons, filling 1.2m as the adsorption layer, filter material carbon steel rubber lining, wall thickness 10mm, inner lining 3+2mm natural rubber, the rubber lining extends to the outer flange joint surface, top water distribution device It is designed as a funnel, and the activated carbon is generally replaced once a year. During use, if the pressure in the pipeline is too high or the water flow is unstable, you can open the exhaust valve to exhaust. The activated carbon filter is equipped with a top-view mirror, which can be clearly seen Pollution holding situation and backwashing effect.

It should be further explained that the sodium ion exchanger in this system uses two carbon steel tanks ¢2600*4000mm, one for use and one for standby, and the resin in each tank is filled with 1.5m. The resin uses Rohm and Haas AMBERLITE™IRC120Na, with automatic valves. It can realize automatic operation and regeneration. The net water production of a single set of softener is ≥100T/H, Ф2600mm×H4000mm, carbon steel rubber lining (wall thickness 10mm+rubber lining 3+2mm), with automatic regeneration at regular and constant flow rates; stable operation , high water quality, compact equipment structure, and small installation area; it is maintenance-free equipment, and it does not need special supervision for operation; low operating costs: compared with traditional equipment, water consumption can be greatly reduced; computer online monitoring is adopted to realize The automatic operation of continuous operation and regeneration process is free from human interference in the whole process, and there will be no advance or lag of process operation. Moreover, the switching of each process is almost synchronous. Therefore, the whole set of equipment is accurate, reliable, efficient and saves water. , Save salt, save electricity, save labor, and the cost of water production is extremely low.

Thus, as shown in Figures 6-8, the raw water pump sends the raw water in the raw water tank to two plate heat exchangers, adjusts the temperature of the raw water through the plate heat exchangers, and then sends it to the plate in this embodiment. Type filter 3, the raw water is preliminarily filtered and sent to the front-stage ultrafiltration UF to effectively remove suspended solids, metal oxides, colloids, macromolecular organic matter, and bacteria in the water, and the treated water is sent to the ultraviolet The sterilizer is used to quickly sterilize the water without changing the chemical composition of the water, and then the water is sent to the activated carbon filter to remove the organic matter in the water and reduce the residual chlorine in the water, and finally sent to the softener to reduce the hardness of the water and produce ions water.

In the related technology, once the ultrapure water filtration is put into use, it will run for a long time. In this process, as the raw water is filtered, although the upper filter 322 and the lower filter 323 are optimized, To a certain extent, the clogging phenomenon in the disc filter 3 is reduced, but in the case of long-term use, a certain scale will inevitably be generated in the disc filter 3, or a certain clogging will occur in the disc filter 3 due to impurities in the raw water Phenomenon, causing the filtering effect of the disc filter 3 to gradually decline, and at this time, it is necessary to clean or replace the filter element 32 in the disc filter 3 and the inside of the shell 31 of the disc filter 3. The existing disc filter The design, its internal structure is complicated, and it is not convenient to take out the core body inside, which makes the existing disc filter not easy to clean or replace the inside and the parts inside, which in turn increases the cost of use.

According to some embodiments of the present application, as shown in Fig. 2-Fig. 5, the bottom end of the pipe 321 is fixedly sleeved with the limit seat 324, and the top of the limit seat 324 is designed in a conical shape, which facilitates the sliding of sundries to the outside of the limit seat 324. The limit seat 324 cooperates with the arc-shaped end of the inner bottom of the housing 311 to limit the position of the pipe 321 .

Wherein, a top grabbing ring 325 is fixedly connected to the top of the pipe 321 , which is convenient for taking the entire filter element 32 .

Further, the limit block 326 is fixedly connected to the side wall of the limit seat 324, and the limit block 326 is slidably matched with the first vertical groove 313 and the second vertical groove 314 respectively, so that the pipeline 321, the upper filter sheet 322, and the lower filter plate are further adjusted. The sheet 323 and the ramp 33 play a position-limiting role, and prevent the pipe 321 and the upper filter sheet 322 from rotating in the casing 311 .

Thus, after long-term use, when it is necessary to clean up the inside of the disc filter 3 or to clean up and replace the filter element 32 inside, it is only necessary to open the upper cover on the top of the casing 31, and then the ramp 33, so that the ramp 33 The pull rod 331 on the top is displaced to the first vertical groove 313, and then the top grab ring 325 is pulled to remove the entire filter element 32 and the ramp 33 from the housing 311, and then the pull rod 331 is pulled to pull the ramp 33 out of the housing 311. Remove the filter element 32 to clean and partially replace the inner wall of the housing 311, the ramp 33, and the filter element 32. The simple disassembly and installation design effectively reduces the cost of use and increases the ultra-pure The service life of the water filtration structure.

Although scaling rarely occurs inside the existing disc filter, as the use time increases, the adjustment of the raw water temperature by the plate heat exchanger will inevitably cause more or less scaling inside the disc filter. degree of scale, and the design of the internal structure of the disc filter 3 can further slow down the speed of scale formation.

According to some embodiments of the present application, as shown in FIGS. 2-5 , the upper filter 322 is fixedly sleeved on the pipe 321 , so that the upper filter 322 and the pipe 321 remain in a fixed state.

Wherein, the tie rod 331 corresponds to the lower filter 323 one by one, and strengthens the connection point between the lower filter 323 and the ramp 33 .

Further, the pull rod 331 corresponds to the annular groove 312 one by one.

Therefore, it can be understood that when the raw water enters the disc filter 3, the water flows from bottom to top, and under the spiral structure of the ramp 33, the water flow will make the ramp 33 rotate, and then drive a plurality of bottoms. The filter disc 323 rotates synchronously. On the contrary, when backwashing, similarly, the water rushes out in the pipeline 321, rushes to the ramp 33 after the upper filter disc 322 and the lower filter disc 323, and continues to drive the ramp 33 to rotate, and then A plurality of lower filter discs 323 are rotated, and the rotation of the lower filter discs 323 will cause relative motion to be formed between the upper filter discs 322 and the lower filter discs 323, and the water flow will generate turbulent flow here. And the lower filter piece 323 has a better impact effect, reduces the precipitation of calcium and magnesium plasma in the raw water, and then effectively slows down the formation of scale.

It should be noted that the specific models and specifications of the backwash valve 11, the drain valve 21 and the tension spring 332 need to be selected according to the actual specifications of the device, etc., and the specific calculation method for the selection adopts the existing technology in the field, so no further Go into details.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, various modifications and changes may be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims (10)

1. An ultrapure water filtration structure, comprising a water inlet pipe (1), a drain pipe (2) and a disc filter (3), the water inlet pipe (1) is connected to a plurality of backwash valves (11), A plurality of backwash valves (11) are connected to the sewage pipe (12), one end of the drain pipe (2) is connected to a drain valve (21), and the disc filter (3) is connected to the drain pipe (2 ) and communicate with the backwash valve (11) in one-to-one correspondence, characterized in that: The disc filter (3) includes a casing (31), a filter element (32) and a ramp (33), the casing (31) is connected to the drain pipe (2) and the backwash valve (11) respectively connected, the top of the housing (31) is provided with an upper cover, the upper cover is provided with an exhaust valve, and the filter element (32) includes a pipe (321), an upper filter (322) and a lower filter (323) , the pipe (321) is set in the casing (31), the side wall of the pipe (321) is provided with a plurality of through holes, and the upper filter (322) is sleeved on the pipe (321) , the upper filter (322) is arranged along the axial array of the pipe (321), the top and bottom end faces of the upper filter (322) are tapered, and the lower filter (323) rotates Sleeved on the pipe (321), the lower filter (323) is arranged in an array along the axial direction of the pipe (321), and between the lower filter (323) and the upper filter (322) The structure size of the lower filter (323) is exactly the same as that of the upper filter (322), and the ramp (33) is arranged between the shell (31) and the filter element (32) between. 2 . The ultrapure water filtration structure according to claim 1 , characterized in that, the top end of the casing ( 31 ) is sealed and connected with an upper cover in a threaded manner. 3 . 3. The ultrapure water filtration structure according to claim 1, characterized in that, the housing (31) includes a housing (311) and an annular groove (312), and the annular groove (312) is along the The casing (311) is uniformly arranged axially on the inner wall of the casing (311). 4. The ultrapure water filtering structure according to claim 3, characterized in that the cross section of the annular groove (312) is T-shaped. 5. The ultrapure water filtration structure according to claim 3, characterized in that, the inner wall of the housing (311) is provided with a first vertical groove (313), and the first vertical groove (313) is along the The casing (311) is arranged in the axial direction, the first vertical slots (313) are arranged along the radial circumference array of the casing (311), the first vertical slots (313) and the plurality of the The annular groove (312) is connected, and the cross section of the first vertical groove (313) is T-shaped. 6. An ultrapure water filtration structure according to claim 5, characterized in that, the inner bottom of the housing (311) is designed in an arc shape, and the inner bottom end of the arc design is provided with the first The vertical groove (313) corresponds to the second vertical groove (314), and the cross section of the second vertical groove (314) is T-shaped. 7. The ultrapure water filtration structure according to claim 1, characterized in that, the ramp (33) is designed in a spiral shape. 8. The ultrapure water filtration structure according to claim 6, characterized in that a pull rod (331) is plugged into the side of the ramp (33) close to the housing (311), and the pull rod (331) One end of (331) passing through the ramp (33) is plugged into the lower filter (323), and the end of the tie rod (331) away from the lower filter (323) is connected to the annular groove (312) And the sliding fit of the first vertical groove (313). 9. An ultrapure water filtration structure according to claim 8, characterized in that, the part of the pull rod (331) inserted into the ramp (33) is sleeved with a spring (332), and the One end of the spring (332) abuts against the pull rod (331), and the other end of the spring (332) abuts against the ramp (33). 10. An ultrapure water filtration system, characterized in that it comprises the ultrapure water filtration structure described in any one of claims 1-9, and: A pretreatment end, the pretreatment end includes a raw water tank, a plate heat exchanger, a pre-stage ultrafiltration, an ultraviolet sterilizer, an activated carbon filter, and a softener; The raw water tank communicates with the plate heat exchanger through the raw water pump, the plate heat exchanger communicates with the water inlet pipe (1), and the drain pipe (2) communicates with the pre-stage ultrafiltration, and the pre-stage ultrafiltration Connected to the ultraviolet sterilizer, the ultraviolet sterilizer is connected to the activated carbon filter, and the activated carbon filter is connected to the softener; Wherein the raw water tank plays a buffering role in the supply of raw water, the plate heat exchanger is used to adjust the water temperature, the pre-stage ultrafiltration is used for further physical filtration of the raw water, and the ultraviolet sterilizer is used for the raw water Sterilization, the active carbon filter removes the total organic carbon and residual chlorine in the water, and the softener is used for hard water softening and deionized water production.

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